Chalk-sharpener



H. L. ROSENIHAL.

CHALK SHARPENER.

APPLICATION FILED snmzo. 1919.

1,332,068. 7 Patented Feb. 24,1920. M

IN WIN TOR Maw/5 Z. Foam/rm;

A TTORNEYS HARRIS L. ROSENTHAQYOF NEW YORK, .11. Y.

CHALK-SHARPENE R.

Specification of Letters Patent.

Patented rebQza, 1920.

Application filed September 20, 1919. Serial No. 325,176.

To all whoa-nit may concern: 9

Be it known that I, HARRIS L. RosnN'rHAL, a citizen of the United States, and a resident of the city of NewYork, borough of Manhattan, in the county of New York and State of New York, have invented a new and Improved Chalk-Sharpener, ofwhich the following is a full, clear, and exact description.

This invention relates to improvements in chalk sharpeners, an object of the invention being to provide a device of the character stated, which will perfectly sharpen the chalk and perform the function quickly and economically. 1

Heretofore, chalk, such as is used by, the needle industry and the like, has usually been sharpened or scraped by means of an This not only consumes ordinary knife. considerable time. but results in an imperfectly sharpened article and is also extremely unsatisfactory as the fine particles of chalk are scattered about and wasted. With my improved device the fine particles of these several adjuncts of the tailoring or other trade.

With these and other objects in view the invention consists in certain novel features of construction, and combinations and arrangements of parts, as will he more fully hereinafter described and pointed out in the I V.

' it 18 of thln metal, provides a cutting edge claims. I

In the accompanying drawings- Figure 1 IS a view 1n front elevation partly broken away illustrating my improvements; p

F1 2 is a view in transverse section 23. the line'22 of Fig. 1;

Fig. 8 is a top plan view; Fig. 1 is a fragmentary end view; and Fig. 5 is a view in section on the line 55 of Fig. 3. V

1 represents a casing which is of general rectangular form open at its front and top and having a horizontal partition 2 therein providing a space for a box of chalk 3 below the partition and supporting an empty. box at above the partition to catch the particles of chalk. A piece of chalk is indicated by the reference numeral 12 and while this article is commonly known in the trade as chalk, it is composed largely or entirely of wax and hence I. use the trade name to indicate an article which is used for marking on cloth and commonly known aschalk.

Tire bails 5 and 6 are connected to the ends of the casing and adapted to hang in front of the casing to hold the boxes 3 and with the upper edge of the cutter, and a guard plate 10 is positioned at an incline and at its upper forward edge projects over the cutterT. This guard 10 prevents contact of the fingers with the cutter during the sharpening operation and also acts as a defiector to direct downwardly flying particles of chalk.

The cutter 7 is of relatively thin metal so that when it is corrugated and located edgewise as shown its upper ed e presents a cutting or scraping surface wl iich effectuallyremoves the material of the chalk when the latter is reciprocated longitudinally of the cutter as a whole. The chalk is held in the position shown in dotted lines in Fig. 2 and moved along the edge of the cutter so as to scrape the chalk and give it a sharp edge- V The cutter 7, by reason of the fact that 7 throughout its upper surface. The guard plate 10 is spaced from a flange 11 on the-back 8 and provides a space 1n which the chalk indicated at 12 may be deposited ready for convenient use. A coiled spring 13 is secured to one end of the casing and is adapted to support pencils 14. A similar coiled spring 15 is secured to the back of the casing and is adapted to support a chalk eraser 16. This eraser has a curved smooth end 17 Which is adapted, when heated, to'be moved over a chalk mark on the oods and by reason of the heat will remove t e chalk mark.

To heat the provide device, such as shown most clearly in Fig. 5, which consists of a cup 18 fixed to the back of the casing and adapted to receive the small particles of wax which are scraped or cut from the chalk. These particles of Wax, indicated by the reference numeral 19, are deposited in the cup 18 and a wick 20 of any approved form is positioned in the wax and when this Wick is lighted, it serves as a heater for the eraser 16.

g It will thus be noted that with my improved device the chalk marking I devices, such as pencils, and an eraser are conveniently located so that the device not only operates as a chalk sharpener, but isa time saver as well.

Various slight changes may be made in the general form and arrangementof parts described without departing from the invention, and hence I do not limit myself to the precise details set forth but consider myself at liberty to make such changes and alterations as fairly fall within'the spirit and scope of the appended claims.

I claim: 7 V

1. A chalk sharpener, comprising a casing, a cutter secured at-its ends to a Wall of the casing and at its intermediate portion bein spaced from said wall and serrated longitudinally, and a supporting bar located in front of the cutting edge of the cutter and in horizontal alinement therewith.

' 2. A chalk sharpener, comprising a casthe casing and at its intermediate portion spaced from said wall and serrated longitudinally, a supportlng bar located in front of the cutting edge of the cutter and in hori- V adapted to project over the front'of the easing to confine the boxes, and a cutter located above the empty box support. 7

a. A chalk sharpener, comprising a casing, a stationary cutter in the upper portion of the casing, a horizontal partition in the casing below the cutter, said: partition and the bottom of the casing adapted to support boxes, and bails oivotally connected at their ends to the ends of the casing and at their intermediate portions normally located in front vof the boxes on the partition and the bottom of the casing.

'5. A chalk sharpener, comprising a casing, a stationary cutter in the casing, supports on the outside of the casing adapted to receive encils and a chalk eraser therein, a receptacle on the casing-adapted to receivethe particles of chalk from the cutter,

and a wick located'iu said particles of chalk and constituting a heater for the chalk eraser. V HARRIS L. ROSENTHALJ 

